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Power Protein Darrell Miller 6/11/05
Cholesterol Conundrum Darrell Miller 6/10/05




Power Protein
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Date: June 11, 2005 05:04 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Power Protein

Power Protein by Joanne Gallo Energy Times, August 4, 1999

Chances are, if you've been trying to lose weight, build muscle, or increase your energy levels, then you've been hearing about protein. This essential nutrient has stolen the spotlight of the health industry as the alleged key to vitality and a solid physique.

With books like Protein Power (Bantam) and Dr. Atkins' New Diet Revolution (Avon) firmly implanted on The New York Times bestseller list, and protein bars and shakes growing in popularity, more people than ever are seeking to tap into the power of protein.

But before you go on an all-out protein-blitz, how can you decide what's best for you?

The Purpose of Protein

No doubt about it, protein performs a variety of roles. First and foremost, it is used to manufacture and repair all of the body's cells and tissues, and forms muscles, skin, bones and hair. Protein makes up the connective tissue that forms the matrix of bones; keratin is a type of protein used to make hair and nails.

It is essential to all metabolic processes; digestive enzymes and metabolism-regulating hormones (such as insulin, which influences blood sugar levels) are all made of protein. This nutrient also intricately takes part in transport functions: Without sufficient protein the body cannot produce adequate hemoglobin, which carries nutrients through the blood. Lipo-proteins are fat-carrying proteins which transport cholesterol through the bloodstream.

Protein helps regulate fluid and electrolyte balance, maintaining proper blood volume. Immunoglobulins and antibodies that ward off diseases are also comprised of protein.

Any protein that you eat that is not utilized for these purposes is stored as fat, although some may be broken down, converted to glucose and burned for energy. This can occur during intensive workouts, or when the body runs out of carbohydrates from the diet or glycogen from its muscle and liver stores.

"Even though the body can depend on the fat it has stored, it still uses muscle protein, unless it is fed protein as food," explain Daniel Gastelu, MS, MFS, and Fred Hatfield, PhD, in their book Dynamic Nutrition for Maximum Performance (Avery). "When dietary circumstances cause the body to use amino acids as a source of energy, it cannot also use these amino acids for building muscle tissue or for performing their other metabolic functions."

One can see why it is so important to eat a sufficient amount of protein daily in food, shakes or bars. Without it, bone tends to break down, the immune system can become impaired, and muscle strength drops as the body uses up muscle protein for energy.

Acid Trip

Proteins are built of chains of amino acids, and 20 different kinds of these building blocks are necessary for protein synthesis within the body. Eleven of them can be manufactured by the body through a process called de novo synthesis; these are referred to as non-essential amino acids. The other nine, which must be obtained from the diet, are known as essential amino acids. (Although some amino acids are called "non-essential," in actuality they are vital: The body needs all 20 amino acids to function properly.)

Some of the more familiar non-essential amino acids include: n Carnitine helps remove fat from the bloodstream n Arginine helps burn sugar Essential amino acids include: n L-tryptophan, a precursor of the neurotransmitter serotonin, helps create calm moods and sleep patterns n L-lysine, required for the metabolism of fats n L-methionine a component of SAM-e (a supplement intended to relieve depression and arthritis, see p. 45)

The body forms and destroys protein from amino acids in a constant cycle of synthesis and degradation. You must consume protein regularly to replace the lost amino acids that are oxidized when protein is broken down and used for fuel. The amount of amino acids lost each day depends on what you eat and how much exercise you do.

Athletes vs. Weekend Warriors

Protein intake in the general population is still adequate, notes Gail Butterfield, PhD, RD, director of Sports Nutrition at Stanford University Medical School. "But we're learning that what is true for the general population may not be true for the athletic population," she says. "With heavy training there is greater protein degradation and you need to increase your intake. Thus, protein requirements are higher for athletes than regular people."

Also, if you diet or restrict your eating in any way, you may also not be getting enough protein.

Certainly, if you work out, eating protein is important. Providing four calories of energy per gram, protein keeps blood sugar steady during exercise. After exercise, it helps replenish and maintain stores of glycogen (stored muscle fuel) and decreases the loss of amino acids, as recent research has shown (J Appl Physiol 81 (5), Nov. 1996: 2095-2104). Lab studies in animals show that protein consumed after you run, lift weights, bike, etc..., helps stimulate muscle growth (Jrnl of Nut 127 [6], June 1997: 1156-1159)

High-protein diets are frequently touted to promote weight loss and increased energy. One of the most influential: the so-called 40-30-30 formula, developed by Barry Sears in his book The Zone: A Dietary Roadmap (HarperCollins), which describes a diet whose calories are 40% carbohydrates, 30% protein and 30% fat. The rationale: when you eat too many carbohydrates, your body uses these starches for energy instead of burning body fat. A high protein diet is supposed to keep your blood sugar balanced and stimulate hormones that burn body fat instead of carbohydrates for energy.

Other fitness experts such as Sherri Kwasnicki, IDEA International Personal Trainer of the Year of 1998, say that while protein is a necessary component of any diet, extreme high-protein plans aren't necessary for recreational fitness buffs. However, she notes that maintaining muscle mass is the key to aging gracefully, and getting enough protein is critical for that.

Protein Sources

Many people today won't eat meat and dairy for ethical reasons, or to avoid the antibiotics and other chemicals in the raising of poultry and cattle. But that doesn't have to prohibit adequate protein intake. All soybean products, including tofu and soymilk, provide complete proteins, which supply ample quantities of all the essential amino acids.

Vegan Power

In the past vegetarians were told to combine particular foods to make sure they consumed all the essential amino acids at each meal. (For example, beans with either brown rice, corn, nuts, seeds or wheat forms "complete" protein.) Today, diet experts aren't so picky. Eating a variety of plant-based foods throughout the day is just as effective as combining them at one meal.

Vegans who avoid all animal products should eat two servings at sometime during the day of plant-based protein sources, such as tofu, soy products, legumes, seeds and nuts.

Protein On-The-Go

The newest sources of protein are bars and shakes, which are growing steadily in popularity. Protein bars now constitute about 12% of the so-called energy bar market, with sales increasing about 38% per year. These bars generally provide at least 20 grams of protein, including soy and whey protein and calcium caseinate (milk protein). The benefits: bars supply protein along with carbohydrates for energy; protein powders, on the other hand, provide quickly digested, easily absorbed amino acids.

Edmund Burke, PhD, author of Optimal Muscle Recovery (Avery), suggests "If you need extra protein, you may benefit from the convenience of a mixed carbohydrate-protein supplement... choose a supplement that's healthy and low in fat."

Amino acid supplements are also growing in popularity, reported to build muscle and burn fat, or improve mood by boosting brain neurotransmitters. The amino acids glutamine, phenylalanine, tyrosine and 5-HTP (a form of tryptophan) are all used to boost spirits and enhance brain function.

And if you still ponder the merits of those high protein diets, do keep in mind that protein may be better at controlling hunger than carbohydrates or fat since it steadies blood sugar, so it may help you stick to a reduced-calorie plan. But excess protein can't be stored as protein in the body: It is either burned for energy or converted to fat. And carbs are still the body's top energy source, so forgoing too many can leave you tired and sluggish.

Still, with so many vital functions-and a variety of sources to choose from-you can't afford to not explore the benefits of protein.



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Cholesterol Conundrum
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Date: June 10, 2005 02:35 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Cholesterol Conundrum

Cholesterol Conundrum

by Jane Lane Energy Times, February 7, 1999

The cholesterol story packs enough subplots to satisfy a soap opera. There's Cholesterol: The Good, the Bad and the Awful. Cholesterol: The Stalker Behind Every (Restaurant) Door. Cholesterol Steals Your Heart Away-to the Mediterranean.

The very image of cholesterol chills the imagination. Lurid and unsavory, it would seem to bob through the bloodstream like blobs of fat congealed on cold soup, slathering itself onto arteries.

Cholesterol is in fact a normal, natural substance in our bodies, found in the brain, nerves, liver, blood and bile. Cholesterol is so crucial that each cell is equipped with the means to synthesize its own membrane cholesterol, regulating the fluidity of those membranes when they are too loose or too stiff.

We manufacture steroid hormones-the female hormones estrogen and progesterone, and the male hormone testosterone-from cholesterol. Adrenal corticosteroid hormones, which regulate water balance through the kidneys, and the hormone cortisone, the vital anti-inflammatory that also governs our stress response, come from cholesterol. Other jobs of cholesterol: production of vitamin D and bile acid (for the digestive process); healing and protecting skin, and antioxidant compensation when vitamin and mineral stores are low.

How can mere mention of this invaluable component in our body chemistry make our blood run cold?

Guilt by Association

Cholesterol's reputation as a bad character actually originates in the crowd it runs with: the lipoproteins, protein molecules to which it binds in order to travel back and forth through the bloodstream to the liver, where it is manufactured.

Not really a nasty round glob of fat at all, cholesterol is a crystalline substance, technically a steroid, but soluble in fats rather than water, thus classified as a lipid, as fats are. Thousands of cholesterol molecules bind with lipoproteins, spherical fat molecules that transport them through the bloodstream.

Three different kinds of lipoproteins participate in this necessary process, not always with the same salutary effect. Here's how they work:

High-density lipoprotein (HDL): referred to as the "good cholesterol." Carries relatively little cholesterol. Travels through the bloodstream removing excess cholesterol from the blood and tissues. HDLs return the surplus to the liver, where it may once again be incorporated into low-density lipoproteins for redelivery to the cells.

Low-density lipoprotein (LDL): the so-called "bad cholesterol," heavily laden with cholesterol, hauling it from the liver to all cells in the body.

Ideally, this system should be in balance. But if there is too much cholesterol for the HDLs to pick up, or an inadequate supply of HDLs, cholesterol may aggregate into plaque groups that block arteries.

Lipoprotein(a), or Lp(a): the "really bad" cholesterol, can step in, providing the glue that actually sticks to the arterial wall. Lp(a) is an LDL particle with an extra adhesive protein wrapped around it, enabling it to attach fat globules to the walls of blood vessels. The potentially deadly results are atherosclerotic ("plaque") deposits. Simple LDL lacks adhesive power and presents little risk for cardiovascular disease.

Researchers confirmed the existence of Lp(a) in the August 1996 issue of the Journal of the American Medical Association, disclosing that high levels of Lp(a) in the blood can double a man's risk of heart attack before age 55. Doctors estimate that about 20% of all Americans carry elevated levels of Lp(a).

One troubling aspect of the report, part of the ongoing 40-year-old Framingham Study, concerned the fact that the men who suffered heart attacks entered the project with no signs of heart disease and only slightly elevated cholesterol.

But during the 15-year investigation, 129 men out of 2,191 developed premature heart disease.

The culprit? High levels of Lp(a)

Experts don't know for certain where Lp(a) comes from, or its normal function, although they suspect the body's quotient of Lp(a) is mostly due to your genes. According to the study, they also believe that aspirin, a blood thinner, and red wine (or its grapeseed and skin extracts) may mitigate the damage of Lp(a). That also would explain why the French, who tend to wash down their fat-rich diet with red wine, experience a relatively moderate incidence of cardiovascular disease

The Terrible Triglycerides

The body also transports fats via triglycerides (TGs), the main form of body fat and the storehouse for energy. Edible oils from seeds, egg yolk and animal fats also are composed chiefly of TGs. Although not as corrosive as LDL, excess TGs intensify heart disease potential when they oxidize and damage artery linings or induce blood cells to clump.

An "acceptable" level of triglycerides is thought to be 200 milligrams, although under 150 is probably healthier. And some researchers think your triglyceride reading should be below 100. High triglycerides and low HDL often occur together, increasing the risks of cardiovascular disease, high blood pressure, heart and kidney failure and other degenerative diseases.

What To Do About Your Cholesterol

Have it checked. High cholesterol alone shows no symptoms. Your health practitioner can perform a laboratory test to measure your levels. Thoroughly share your own medical history and as much as you know about your family members: heredity and related illnesses definitely are important influences. People with diabetes, for example, can have high levels of triglycerides, which also may lead to pancreatitis (painful inflammation of the pancreas) at extremely high levels.

According to the National Cholesterol Education Program, a reading of under 200 mg/dL is desirable; 200 to 239 is borderline high; 240 and above is high. Your LDL level should be 130 or under; HDL should not be lower than 35. A triglyceride level below 200 is considered desirable; readings above 400 are high.

Adjust your diet. Cholesterol levels are readily controllable, primarily through changes in your diet. Leslie C. Norins, MD, PhD, suggests all-out war in his Doctor's 30-Day Cholesterol Blitz (Advanced Health Institute) with saturated fats, which raise cholesterol more than any other component in your diet, as your number-one target. Out with saturated fats like butter, cheese, whole milk, ice cream, red meat and some vegetable fats found in tropical oils like coconut and palm; in with fruits, vegetables, brown rice, barley (a good source of soluble fiber, the kind that soaks up fats and cholesterol and escorts them out of the body), beans, potatoes and pasta, prepared or dressed with monounsaturated fats in olive and canola oils (the so-called Mediterranean diet concept). Feast on cold-water fish (mackerel, salmon, sardines and herring) rich in omega-3 fatty acids that help reduce serum lipids, among many other healthful advantages.

Exercise. Move it and lose it are the words to live by when it comes to cholesterol. Researchers from the Stanford Center for Research in Disease Prevention reported in the July 2, 1998 New England Journal of Medicine (vol. 339, pages 12-20) that a weight-loss diet like that of the National Cholesterol Education Program plus exercise significantly lowered LDL (bad) cholesterol levels for men and postmenopausal women. The diet alone failed to lower LDL in these folks with high-risk lipoprotein.

Educate yourself. In addition to your health practitioner, books and magazines can guide you in cholesterol management. A trove of information is the National Cholesterol Education Program (NCEP), launched in 1985 by the National Institute of Health. Their address is: National Cholesterol Education Program, Information Center, P.O. Box 30105, Bethesda, MD 20824-0105; telephone (301) 251-1222; they're on the web at /nhlbi/.

Recommended Reading: Fats that Heal, Fats that Kill (Alive, 1993), by Udo Erasmus.

Prescription for Nutritional Healing (Avery, 1997), by James F. Balch, MD, and Phyllis A. Balch, CNC.

The Healthy Heart Formula (Chronimed, 1997), by Frank Bary, MD.

Eradicating Heart Disease (Health Now, 1993), by Matthias Rath, MD.



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